OBSERVATION OF SURFACES OF MGO SINGLE-CRY STAL WITH ATOMIC-FORCE MICROSCOPE

The (100), (110) and (111) planes of MgO were observed at an atomic sc ale using an atomic force microscope. It was identified that the surfa ce structures were different from the bulk ones and that the surface d efects existed on each surface. It can be suggested that the surface f ree energy and the polarization play an important role in the alterati on of the surface structures. It can be considered that all the bright spots in the AFM images correspond to the positions of the oxygen ato m in the case of the MgO surface.